%0 Journal Article %A A. S. Ivachev %T Research of differentiable modulo $p^n$ functions %J Prikladnaya Diskretnaya Matematika. Supplement %D 2014 %P 19-22 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/PDMA_2014_7_a6/ %G ru %F PDMA_2014_7_a6